2 * This file is part of wl1251
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/firmware.h>
25 #include <linux/delay.h>
26 #include <linux/irq.h>
27 #include <linux/crc32.h>
28 #include <linux/etherdevice.h>
29 #include <linux/vmalloc.h>
30 #include <linux/slab.h>
33 #include "wl12xx_80211.h"
45 void wl1251_enable_interrupts(struct wl1251 *wl)
47 wl->if_ops->enable_irq(wl);
50 void wl1251_disable_interrupts(struct wl1251 *wl)
52 wl->if_ops->disable_irq(wl);
55 static int wl1251_power_off(struct wl1251 *wl)
57 return wl->if_ops->power(wl, false);
60 static int wl1251_power_on(struct wl1251 *wl)
62 return wl->if_ops->power(wl, true);
65 static int wl1251_fetch_firmware(struct wl1251 *wl)
67 const struct firmware *fw;
68 struct device *dev = wiphy_dev(wl->hw->wiphy);
71 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
74 wl1251_error("could not get firmware: %d", ret);
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
85 wl->fw_len = fw->size;
86 wl->fw = vmalloc(wl->fw_len);
89 wl1251_error("could not allocate memory for the firmware");
94 memcpy(wl->fw, fw->data, wl->fw_len);
104 static int wl1251_fetch_nvs(struct wl1251 *wl)
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
113 wl1251_error("could not get nvs file: %d", ret);
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
124 wl->nvs_len = fw->size;
125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
128 wl1251_error("could not allocate memory for the nvs file");
136 release_firmware(fw);
141 static void wl1251_fw_wakeup(struct wl1251 *wl)
145 elp_reg = ELPCTRL_WAKE_UP;
146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
149 if (!(elp_reg & ELPCTRL_WLAN_READY))
150 wl1251_warning("WLAN not ready");
153 static int wl1251_chip_wakeup(struct wl1251 *wl)
157 ret = wl1251_power_on(wl);
161 msleep(WL1251_POWER_ON_SLEEP);
162 wl->if_ops->reset(wl);
164 /* We don't need a real memory partition here, because we only want
165 * to use the registers at this point. */
166 wl1251_set_partition(wl,
170 REGISTERS_DOWN_SIZE);
172 /* ELP module wake up */
173 wl1251_fw_wakeup(wl);
175 /* whal_FwCtrl_BootSm() */
177 /* 0. read chip id from CHIP_ID */
178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
180 /* 1. check if chip id is valid */
182 switch (wl->chip_id) {
183 case CHIP_ID_1251_PG12:
184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
187 case CHIP_ID_1251_PG11:
188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
191 case CHIP_ID_1251_PG10:
193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
198 if (wl->fw == NULL) {
199 ret = wl1251_fetch_firmware(wl);
204 if (wl->nvs == NULL && !wl->use_eeprom) {
205 /* No NVS from netlink, try to get it from the filesystem */
206 ret = wl1251_fetch_nvs(wl);
215 #define WL1251_IRQ_LOOP_COUNT 10
216 static void wl1251_irq_work(struct work_struct *work)
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
220 container_of(work, struct wl1251, irq_work);
223 mutex_lock(&wl->mutex);
225 wl1251_debug(DEBUG_IRQ, "IRQ work");
227 if (wl->state == WL1251_STATE_OFF)
230 ret = wl1251_ps_elp_wakeup(wl);
234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
241 wl->rx_counter = wl1251_mem_read32(
242 wl, wl->data_path->rx_control_addr);
244 /* We handle a frmware bug here */
245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
247 wl1251_debug(DEBUG_IRQ,
248 "RX: FW and host in sync");
249 intr &= ~WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
253 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr &= ~WL1251_ACX_INTR_RX1_DATA;
258 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
259 intr |= WL1251_ACX_INTR_RX0_DATA;
260 intr |= WL1251_ACX_INTR_RX1_DATA;
264 "RX: FW and host out of sync: %d",
265 wl->rx_counter - wl->rx_handled);
269 wl->rx_handled = wl->rx_counter;
271 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
275 intr &= wl->intr_mask;
278 wl1251_debug(DEBUG_IRQ, "INTR is 0");
282 if (intr & WL1251_ACX_INTR_RX0_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
287 if (intr & WL1251_ACX_INTR_RX1_DATA) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
292 if (intr & WL1251_ACX_INTR_TX_RESULT) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl);
297 if (intr & WL1251_ACX_INTR_EVENT_A) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl, 0);
302 if (intr & WL1251_ACX_INTR_EVENT_B) {
303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
304 wl1251_event_handle(wl, 1);
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
322 mutex_unlock(&wl->mutex);
325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
326 u16 beacon_interval, u8 dtim_period)
330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
331 DEFAULT_HW_GEN_MODULATION_TYPE,
332 wl->tx_mgmt_frm_rate,
333 wl->tx_mgmt_frm_mod);
338 * Join command applies filters, and if we are not associated,
339 * BSSID filter must be disabled for association to work.
341 if (is_zero_ether_addr(wl->bssid))
342 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
344 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
349 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
351 wl1251_warning("join timeout");
357 static void wl1251_op_tx(struct ieee80211_hw *hw,
358 struct ieee80211_tx_control *control,
361 struct wl1251 *wl = hw->priv;
364 skb_queue_tail(&wl->tx_queue, skb);
367 * The chip specific setup must run before the first TX packet -
368 * before that, the tx_work will not be initialized!
371 ieee80211_queue_work(wl->hw, &wl->tx_work);
374 * The workqueue is slow to process the tx_queue and we need stop
375 * the queue here, otherwise the queue will get too long.
377 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
378 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
380 spin_lock_irqsave(&wl->wl_lock, flags);
381 ieee80211_stop_queues(wl->hw);
382 wl->tx_queue_stopped = true;
383 spin_unlock_irqrestore(&wl->wl_lock, flags);
387 static int wl1251_op_start(struct ieee80211_hw *hw)
389 struct wl1251 *wl = hw->priv;
390 struct wiphy *wiphy = hw->wiphy;
393 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
395 mutex_lock(&wl->mutex);
397 if (wl->state != WL1251_STATE_OFF) {
398 wl1251_error("cannot start because not in off state: %d",
404 ret = wl1251_chip_wakeup(wl);
408 ret = wl1251_boot(wl);
412 ret = wl1251_hw_init(wl);
416 ret = wl1251_acx_station_id(wl);
420 wl->state = WL1251_STATE_ON;
422 wl1251_info("firmware booted (%s)", wl->fw_ver);
424 /* update hw/fw version info in wiphy struct */
425 wiphy->hw_version = wl->chip_id;
426 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
430 wl1251_power_off(wl);
432 mutex_unlock(&wl->mutex);
437 static void wl1251_op_stop(struct ieee80211_hw *hw)
439 struct wl1251 *wl = hw->priv;
443 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
445 mutex_lock(&wl->mutex);
447 WARN_ON(wl->state != WL1251_STATE_ON);
450 ieee80211_scan_completed(wl->hw, true);
451 wl->scanning = false;
454 wl->state = WL1251_STATE_OFF;
456 wl1251_disable_interrupts(wl);
458 mutex_unlock(&wl->mutex);
460 cancel_work_sync(&wl->irq_work);
461 cancel_work_sync(&wl->tx_work);
462 cancel_delayed_work_sync(&wl->elp_work);
464 mutex_lock(&wl->mutex);
466 /* let's notify MAC80211 about the remaining pending TX frames */
468 wl1251_power_off(wl);
470 memset(wl->bssid, 0, ETH_ALEN);
472 wl->bss_type = MAX_BSS_TYPE;
474 wl->data_in_count = 0;
477 wl->rx_current_buffer = 0;
479 wl->next_tx_complete = 0;
481 wl->station_mode = STATION_ACTIVE_MODE;
482 wl->tx_queue_stopped = false;
483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
485 wl->channel = WL1251_DEFAULT_CHANNEL;
487 wl1251_debugfs_reset(wl);
489 mutex_unlock(&wl->mutex);
492 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
493 struct ieee80211_vif *vif)
495 struct wl1251 *wl = hw->priv;
498 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
499 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
501 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
502 vif->type, vif->addr);
504 mutex_lock(&wl->mutex);
513 case NL80211_IFTYPE_STATION:
514 wl->bss_type = BSS_TYPE_STA_BSS;
516 case NL80211_IFTYPE_ADHOC:
517 wl->bss_type = BSS_TYPE_IBSS;
524 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
525 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
526 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
527 ret = wl1251_acx_station_id(wl);
533 mutex_unlock(&wl->mutex);
537 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
538 struct ieee80211_vif *vif)
540 struct wl1251 *wl = hw->priv;
542 mutex_lock(&wl->mutex);
543 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
545 mutex_unlock(&wl->mutex);
548 static int wl1251_build_qos_null_data(struct wl1251 *wl)
550 struct ieee80211_qos_hdr template;
552 memset(&template, 0, sizeof(template));
554 memcpy(template.addr1, wl->bssid, ETH_ALEN);
555 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
556 memcpy(template.addr3, wl->bssid, ETH_ALEN);
558 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
559 IEEE80211_STYPE_QOS_NULLFUNC |
560 IEEE80211_FCTL_TODS);
562 /* FIXME: not sure what priority to use here */
563 template.qos_ctrl = cpu_to_le16(0);
565 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
569 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
571 struct wl1251 *wl = hw->priv;
572 struct ieee80211_conf *conf = &hw->conf;
573 int channel, ret = 0;
575 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
577 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
579 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
582 mutex_lock(&wl->mutex);
584 ret = wl1251_ps_elp_wakeup(wl);
588 if (channel != wl->channel) {
589 wl->channel = channel;
591 ret = wl1251_join(wl, wl->bss_type, wl->channel,
592 wl->beacon_int, wl->dtim_period);
597 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
598 wl1251_debug(DEBUG_PSM, "psm enabled");
600 wl->psm_requested = true;
602 wl->dtim_period = conf->ps_dtim_period;
604 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
608 * mac80211 enables PSM only if we're already associated.
610 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
613 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
615 wl1251_debug(DEBUG_PSM, "psm disabled");
617 wl->psm_requested = false;
619 if (wl->station_mode != STATION_ACTIVE_MODE) {
620 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
626 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
627 if (conf->flags & IEEE80211_CONF_IDLE) {
628 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
632 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
635 ret = wl1251_join(wl, wl->bss_type, wl->channel,
636 wl->beacon_int, wl->dtim_period);
642 if (conf->power_level != wl->power_level) {
643 ret = wl1251_acx_tx_power(wl, conf->power_level);
647 wl->power_level = conf->power_level;
651 wl1251_ps_elp_sleep(wl);
654 mutex_unlock(&wl->mutex);
659 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
662 FIF_BCN_PRBRESP_PROMISC | \
667 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
668 unsigned int changed,
669 unsigned int *total,u64 multicast)
671 struct wl1251 *wl = hw->priv;
674 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
676 *total &= WL1251_SUPPORTED_FILTERS;
677 changed &= WL1251_SUPPORTED_FILTERS;
680 /* no filters which we support changed */
683 mutex_lock(&wl->mutex);
685 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
686 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
688 if (*total & FIF_PROMISC_IN_BSS) {
689 wl->rx_config |= CFG_BSSID_FILTER_EN;
690 wl->rx_config |= CFG_RX_ALL_GOOD;
692 if (*total & FIF_ALLMULTI)
694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
695 * all multicast frames
697 wl->rx_config &= ~CFG_MC_FILTER_EN;
698 if (*total & FIF_FCSFAIL)
699 wl->rx_filter |= CFG_RX_FCS_ERROR;
700 if (*total & FIF_BCN_PRBRESP_PROMISC) {
701 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
702 wl->rx_config &= ~CFG_SSID_FILTER_EN;
704 if (*total & FIF_CONTROL)
705 wl->rx_filter |= CFG_RX_CTL_EN;
706 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
707 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
708 if (*total & FIF_PROBE_REQ)
709 wl->rx_filter |= CFG_RX_PREQ_EN;
711 if (wl->state == WL1251_STATE_OFF)
714 ret = wl1251_ps_elp_wakeup(wl);
718 /* send filters to firmware */
719 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
721 wl1251_ps_elp_sleep(wl);
724 mutex_unlock(&wl->mutex);
728 static int wl1251_set_key_type(struct wl1251 *wl,
729 struct wl1251_cmd_set_keys *key,
730 enum set_key_cmd cmd,
731 struct ieee80211_key_conf *mac80211_key,
734 switch (mac80211_key->cipher) {
735 case WLAN_CIPHER_SUITE_WEP40:
736 case WLAN_CIPHER_SUITE_WEP104:
737 if (is_broadcast_ether_addr(addr))
738 key->key_type = KEY_WEP_DEFAULT;
740 key->key_type = KEY_WEP_ADDR;
742 mac80211_key->hw_key_idx = mac80211_key->keyidx;
744 case WLAN_CIPHER_SUITE_TKIP:
745 if (is_broadcast_ether_addr(addr))
746 key->key_type = KEY_TKIP_MIC_GROUP;
748 key->key_type = KEY_TKIP_MIC_PAIRWISE;
750 mac80211_key->hw_key_idx = mac80211_key->keyidx;
752 case WLAN_CIPHER_SUITE_CCMP:
753 if (is_broadcast_ether_addr(addr))
754 key->key_type = KEY_AES_GROUP;
756 key->key_type = KEY_AES_PAIRWISE;
757 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
760 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
767 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
768 struct ieee80211_vif *vif,
769 struct ieee80211_sta *sta,
770 struct ieee80211_key_conf *key)
772 struct wl1251 *wl = hw->priv;
773 struct wl1251_cmd_set_keys *wl_cmd;
777 static const u8 bcast_addr[ETH_ALEN] =
778 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
780 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
782 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
788 addr = sta ? sta->addr : bcast_addr;
790 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
791 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
792 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
793 key->cipher, key->keyidx, key->keylen, key->flags);
794 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
796 if (is_zero_ether_addr(addr)) {
797 /* We dont support TX only encryption */
802 mutex_lock(&wl->mutex);
804 ret = wl1251_ps_elp_wakeup(wl);
810 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
813 wl_cmd->key_action = KEY_REMOVE;
816 wl1251_error("Unsupported key cmd 0x%x", cmd);
820 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
822 wl1251_error("Set KEY type failed");
826 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
827 memcpy(wl_cmd->addr, addr, ETH_ALEN);
829 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
830 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
832 * We get the key in the following form:
833 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
834 * but the target is expecting:
835 * TKIP - RX MIC - TX MIC
837 memcpy(wl_cmd->key, key->key, 16);
838 memcpy(wl_cmd->key + 16, key->key + 24, 8);
839 memcpy(wl_cmd->key + 24, key->key + 16, 8);
842 memcpy(wl_cmd->key, key->key, key->keylen);
844 wl_cmd->key_size = key->keylen;
846 wl_cmd->id = key->keyidx;
847 wl_cmd->ssid_profile = 0;
849 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
851 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
853 wl1251_warning("could not set keys");
858 wl1251_ps_elp_sleep(wl);
861 mutex_unlock(&wl->mutex);
869 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
870 struct ieee80211_vif *vif,
871 struct cfg80211_scan_request *req)
873 struct wl1251 *wl = hw->priv;
879 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
882 ssid = req->ssids[0].ssid;
883 ssid_len = req->ssids[0].ssid_len;
886 mutex_lock(&wl->mutex);
889 wl1251_debug(DEBUG_SCAN, "scan already in progress");
894 ret = wl1251_ps_elp_wakeup(wl);
898 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
899 req->ie, req->ie_len);
905 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
911 ret = wl1251_cmd_trigger_scan_to(wl, 0);
917 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
918 req->n_channels, WL1251_SCAN_NUM_PROBES);
920 wl->scanning = false;
925 wl1251_ps_elp_sleep(wl);
928 mutex_unlock(&wl->mutex);
933 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
935 struct wl1251 *wl = hw->priv;
938 mutex_lock(&wl->mutex);
940 ret = wl1251_ps_elp_wakeup(wl);
944 ret = wl1251_acx_rts_threshold(wl, (u16) value);
946 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
948 wl1251_ps_elp_sleep(wl);
951 mutex_unlock(&wl->mutex);
956 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
957 struct ieee80211_vif *vif,
958 struct ieee80211_bss_conf *bss_conf,
961 struct wl1251 *wl = hw->priv;
962 struct sk_buff *beacon, *skb;
965 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
967 mutex_lock(&wl->mutex);
969 ret = wl1251_ps_elp_wakeup(wl);
973 if (changed & BSS_CHANGED_CQM) {
974 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
975 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
976 WL1251_DEFAULT_LOW_RSSI_DEPTH,
977 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
980 wl->rssi_thold = bss_conf->cqm_rssi_thold;
983 if (changed & BSS_CHANGED_BSSID) {
984 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
986 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
990 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
991 skb->data, skb->len);
996 ret = wl1251_build_qos_null_data(wl);
1000 if (wl->bss_type != BSS_TYPE_IBSS) {
1001 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1002 wl->beacon_int, wl->dtim_period);
1008 if (changed & BSS_CHANGED_ASSOC) {
1009 if (bss_conf->assoc) {
1010 wl->beacon_int = bss_conf->beacon_int;
1012 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1016 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1023 ret = wl1251_acx_aid(wl, bss_conf->aid);
1027 /* use defaults when not associated */
1028 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1029 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1032 if (changed & BSS_CHANGED_ERP_SLOT) {
1033 if (bss_conf->use_short_slot)
1034 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1036 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1038 wl1251_warning("Set slot time failed %d", ret);
1043 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1044 if (bss_conf->use_short_preamble)
1045 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1047 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1050 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1051 if (bss_conf->use_cts_prot)
1052 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1054 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1056 wl1251_warning("Set ctsprotect failed %d", ret);
1061 if (changed & BSS_CHANGED_BEACON) {
1062 beacon = ieee80211_beacon_get(hw, vif);
1066 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1070 dev_kfree_skb(beacon);
1074 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1077 dev_kfree_skb(beacon);
1082 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1083 wl->channel, wl->dtim_period);
1090 wl1251_ps_elp_sleep(wl);
1093 mutex_unlock(&wl->mutex);
1097 /* can't be const, mac80211 writes to this */
1098 static struct ieee80211_rate wl1251_rates[] = {
1101 .hw_value_short = 0x1, },
1104 .hw_value_short = 0x2,
1105 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1108 .hw_value_short = 0x4,
1109 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1112 .hw_value_short = 0x20,
1113 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1116 .hw_value_short = 0x8, },
1119 .hw_value_short = 0x10, },
1122 .hw_value_short = 0x40, },
1125 .hw_value_short = 0x80, },
1128 .hw_value_short = 0x200, },
1131 .hw_value_short = 0x400, },
1134 .hw_value_short = 0x800, },
1137 .hw_value_short = 0x1000, },
1140 /* can't be const, mac80211 writes to this */
1141 static struct ieee80211_channel wl1251_channels[] = {
1142 { .hw_value = 1, .center_freq = 2412},
1143 { .hw_value = 2, .center_freq = 2417},
1144 { .hw_value = 3, .center_freq = 2422},
1145 { .hw_value = 4, .center_freq = 2427},
1146 { .hw_value = 5, .center_freq = 2432},
1147 { .hw_value = 6, .center_freq = 2437},
1148 { .hw_value = 7, .center_freq = 2442},
1149 { .hw_value = 8, .center_freq = 2447},
1150 { .hw_value = 9, .center_freq = 2452},
1151 { .hw_value = 10, .center_freq = 2457},
1152 { .hw_value = 11, .center_freq = 2462},
1153 { .hw_value = 12, .center_freq = 2467},
1154 { .hw_value = 13, .center_freq = 2472},
1157 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1158 struct ieee80211_vif *vif, u16 queue,
1159 const struct ieee80211_tx_queue_params *params)
1161 enum wl1251_acx_ps_scheme ps_scheme;
1162 struct wl1251 *wl = hw->priv;
1165 mutex_lock(&wl->mutex);
1167 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1169 ret = wl1251_ps_elp_wakeup(wl);
1173 /* mac80211 uses units of 32 usec */
1174 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1175 params->cw_min, params->cw_max,
1176 params->aifs, params->txop * 32);
1181 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1183 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1185 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1187 wl1251_tx_get_queue(queue), ps_scheme,
1188 WL1251_ACX_ACK_POLICY_LEGACY);
1193 wl1251_ps_elp_sleep(wl);
1196 mutex_unlock(&wl->mutex);
1201 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1202 struct survey_info *survey)
1204 struct wl1251 *wl = hw->priv;
1205 struct ieee80211_conf *conf = &hw->conf;
1210 survey->channel = conf->channel;
1211 survey->filled = SURVEY_INFO_NOISE_DBM;
1212 survey->noise = wl->noise;
1217 /* can't be const, mac80211 writes to this */
1218 static struct ieee80211_supported_band wl1251_band_2ghz = {
1219 .channels = wl1251_channels,
1220 .n_channels = ARRAY_SIZE(wl1251_channels),
1221 .bitrates = wl1251_rates,
1222 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1225 static const struct ieee80211_ops wl1251_ops = {
1226 .start = wl1251_op_start,
1227 .stop = wl1251_op_stop,
1228 .add_interface = wl1251_op_add_interface,
1229 .remove_interface = wl1251_op_remove_interface,
1230 .config = wl1251_op_config,
1231 .configure_filter = wl1251_op_configure_filter,
1233 .set_key = wl1251_op_set_key,
1234 .hw_scan = wl1251_op_hw_scan,
1235 .bss_info_changed = wl1251_op_bss_info_changed,
1236 .set_rts_threshold = wl1251_op_set_rts_threshold,
1237 .conf_tx = wl1251_op_conf_tx,
1238 .get_survey = wl1251_op_get_survey,
1241 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1243 unsigned long timeout;
1245 wl1251_reg_write32(wl, EE_ADDR, offset);
1246 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1248 /* EE_CTL_READ clears when data is ready */
1249 timeout = jiffies + msecs_to_jiffies(100);
1251 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1254 if (time_after(jiffies, timeout))
1260 *data = wl1251_reg_read32(wl, EE_DATA);
1264 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1265 u8 *data, size_t len)
1270 wl1251_reg_write32(wl, EE_START, 0);
1272 for (i = 0; i < len; i++) {
1273 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1281 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1286 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1288 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1290 wl1251_warning("failed to read MAC address from EEPROM");
1294 /* MAC is stored in reverse order */
1295 for (i = 0; i < ETH_ALEN; i++)
1296 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1301 static int wl1251_register_hw(struct wl1251 *wl)
1305 if (wl->mac80211_registered)
1308 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1310 ret = ieee80211_register_hw(wl->hw);
1312 wl1251_error("unable to register mac80211 hw: %d", ret);
1316 wl->mac80211_registered = true;
1318 wl1251_notice("loaded");
1323 int wl1251_init_ieee80211(struct wl1251 *wl)
1327 /* The tx descriptor buffer and the TKIP space */
1328 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1329 + WL1251_TKIP_IV_SPACE;
1332 /* FIXME: find a proper value */
1333 wl->hw->channel_change_time = 10000;
1335 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1336 IEEE80211_HW_SUPPORTS_PS |
1337 IEEE80211_HW_SUPPORTS_UAPSD;
1339 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1340 BIT(NL80211_IFTYPE_ADHOC);
1341 wl->hw->wiphy->max_scan_ssids = 1;
1342 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1347 wl1251_read_eeprom_mac(wl);
1349 ret = wl1251_register_hw(wl);
1353 wl1251_debugfs_init(wl);
1354 wl1251_notice("initialized");
1361 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1363 struct ieee80211_hw *wl1251_alloc_hw(void)
1365 struct ieee80211_hw *hw;
1368 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1370 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1372 wl1251_error("could not alloc ieee80211_hw");
1373 return ERR_PTR(-ENOMEM);
1377 memset(wl, 0, sizeof(*wl));
1381 wl->data_in_count = 0;
1383 skb_queue_head_init(&wl->tx_queue);
1385 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1386 wl->channel = WL1251_DEFAULT_CHANNEL;
1387 wl->scanning = false;
1388 wl->default_key = 0;
1392 wl->rx_current_buffer = 0;
1394 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1395 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1397 wl->station_mode = STATION_ACTIVE_MODE;
1398 wl->psm_requested = false;
1399 wl->tx_queue_stopped = false;
1400 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1402 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1403 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1406 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1407 wl->tx_frames[i] = NULL;
1409 wl->next_tx_complete = 0;
1411 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1412 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1415 * In case our MAC address is not correctly set,
1416 * we use a random but Nokia MAC.
1418 memcpy(wl->mac_addr, nokia_oui, 3);
1419 get_random_bytes(wl->mac_addr + 3, 3);
1421 wl->state = WL1251_STATE_OFF;
1422 mutex_init(&wl->mutex);
1424 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1425 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1427 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1428 if (!wl->rx_descriptor) {
1429 wl1251_error("could not allocate memory for rx descriptor");
1430 ieee80211_free_hw(hw);
1431 return ERR_PTR(-ENOMEM);
1436 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1438 int wl1251_free_hw(struct wl1251 *wl)
1440 ieee80211_unregister_hw(wl->hw);
1442 wl1251_debugfs_exit(wl);
1444 kfree(wl->target_mem_map);
1445 kfree(wl->data_path);
1451 kfree(wl->rx_descriptor);
1452 wl->rx_descriptor = NULL;
1454 ieee80211_free_hw(wl->hw);
1458 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1460 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1461 MODULE_LICENSE("GPL");
1462 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1463 MODULE_FIRMWARE(WL1251_FW_NAME);